Mama grizzly, papa polar means threatened baby
(NEWSER) - Melting arctic sea ice isn’t just threatening polar bears’ lives—it’s threatening their gene pool. The loss of ice means more contact between polar bears and genetically-similar grizzlies, which means cross-breeding, scientists say. Hunters have shot at least two polar-grizzly crosses since 2006, the Independent reports. Other species appear to be mixing, too, including beluga whales and narwhals, as well as bowhead and right whales. More»
